[Drake] Re: GB> RF frontend tubes

[Chris Trask]

Kees,
    Of those four tubes that you mentioned, the 6GM6 would be the best for
RF frontend service.  Here's what I have in my notes for these:

    6BZ6    Semiremote cutoff
            Fair to good noise
            Good to very good linearity

    6DC6    Sharp cutoff
            Poor to fair noise
            Good to very good linearity

    6GM6    Semiremote cutoff
            Good noise
            Good to very good linearity

    6JD6    Sharp cutoff
            Good noise
            Fair to good linearity

Chris

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----- Original Message -----
From: <windy10605 at juno.com>
To: <glowbugs at piobaire.mines.uidaho.edu>; <drake at mailman.qth.net>
Sent: Thursday, August 18, 2005 8:33 AM
Subject: GB> RF frontend tubes


> This month's ER has a story by Ray Osterwald comparing various tubes
> 6BZ6, 6DC6, 6GM6 (forgot the 6JD6 ?) for his SX-101A restoration, using a
> TV2 for evaluation. Leaves lots of unanswered questions though. I ought
> to take my metered "tube tester plus" and perform a similiar test at
> Drake 2B voltages.
>
> 73 Kees K5BCQ
>